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TOT

  • 用分支限界法求解背包問(wèn)題(0/1背包) 1.問(wèn)題描述:已知有N個(gè)物品和一個(gè)可以容納TOT重量的背包

    用分支限界法求解背包問(wèn)題(0/1背包) 1.問(wèn)題描述:已知有N個(gè)物品和一個(gè)可以容納TOT重量的背包,每種物品I的重量為Weight,價(jià)值為Value。一個(gè)只能全放入或者不放入,求解如何放入物品,可以使背包里的物品的總價(jià)值最大。 2.設(shè)計(jì)思想與分析:對(duì)物品的選取與否構(gòu)成一棵解樹(shù),左子樹(shù)表示裝入,右表示不裝入,通過(guò)檢索問(wèn)題的解樹(shù)得出最優(yōu)解,并用結(jié)點(diǎn)上界殺死不符合要求的結(jié)點(diǎn)。

    標(biāo)簽: TOT 分支 背包問(wèn)題

    上傳時(shí)間: 2016-02-09

    上傳用戶(hù):我們的船長(zhǎng)

  • Chuong trinh dong bang may tinh TOT nhat hien nay

    Chuong trinh dong bang may tinh TOT nhat hien nay

    標(biāo)簽: Chuong trinh dong bang

    上傳時(shí)間: 2017-07-12

    上傳用戶(hù):youke111

  • We have a group of N items (represented by integers from 1 to N), and we know that there is some TOT

    We have a group of N items (represented by integers from 1 to N), and we know that there is some TOTal order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the TOTal cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the TOTal cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.

    標(biāo)簽: represented integers group items

    上傳時(shí)間: 2016-01-17

    上傳用戶(hù):jeffery

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